Tiling over old flaky paint

[rreanor]

Hi, i need to hang new batrhoom tiles above my bath to create a tiled shower area. I've replaced a load of blown plaster, but the rest of the wall still has old paint on, much of which is flaky.

I've scraped off the loose bits, but do i need to remove it all?

I will be tanking the wall anyway.

 

[curry-kid]

It depends how bad it is. You could try using a couple of coats of "stabilising solution". This seals and bonds the surface.
Did you replace the blown plaster with standard platerboard? Cement board (hardy backerboard) is what you want in a wet area, even if tanking...

Cheers